mm: truncate: change remove_from_page_cache
authorMinchan Kim <minchan.kim@gmail.com>
Tue, 22 Mar 2011 23:32:41 +0000 (16:32 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 23 Mar 2011 00:44:02 +0000 (17:44 -0700)
This patch series changes remove_from_page_cache()'s page ref counting
rule.  Page cache ref count is decreased in delete_from_page_cache().  So
we don't need to decrease the page reference in callers.

Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Cc: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/truncate.c

index d64296be00d39e5c66199e94269f3b8f5ba0bf64..7c617b5f03ee15df66da56f2cc380c97095fd3d2 100644 (file)
@@ -106,9 +106,8 @@ truncate_complete_page(struct address_space *mapping, struct page *page)
        cancel_dirty_page(page, PAGE_CACHE_SIZE);
 
        clear_page_mlock(page);
-       remove_from_page_cache(page);
        ClearPageMappedToDisk(page);
-       page_cache_release(page);       /* pagecache ref */
+       delete_from_page_cache(page);
        return 0;
 }